Filter-press



(No Model.)

B. E. HENDRIGK:

FILTER PRESS.

No. 601,833. Patented Apr. 5, 1898.

WITNESSES:

INVENTORZ By hs Aftomey;

UNITED STATES PATENT O CE.

ELI E. HENDRICK, OF OARBONDALE, PENNSYLVANIA.

FlLTER- -PRESS.

SPECIFICATION forming part of Letters Patent No. 601 ,83, dated April 5, 1898.

' Application filed July 14, uses. Serial No. 599,131. (No model.)

To all whom it may concern:

Be it known that I, ELI E. HENDRIOK, a citi zen of the United States, and a resident of Oarbondale, in the county of Lackawanna and State of Pennsylvania, have invented a certain new and useful Improvement in Filter- Presses, of which the following is a specification.

This invention relates to filter-presses, and, while capable of use in the treatment of other liquids, is designed particularly for the separation of the solid or semisolid substances from oil. In filter-presses heretofore employed for this purpose perforate metallic plates or disks in series have been employed, the several series being separated from each other by means of layers of fabricsuch as canvas, duck, &c. These have commonly been mounted upon a suitable supportingframe, the oil being forced through a central perforation in said plates and fabric under high pressure. It has been the practice to employ between each two layers of fabric two and sometimes three metallic plates, the whole composing what I term a filter-press element, and to secure these togetherin order to preclude disarrangem ent by the pressure of the oil. These securing devices I have found to be defective. The pressure under which the oil is passed through the apparatus, amounting frequently to one thousand pounds to the inch, often bends the plates and sometimes tears them apart, thus intercenter and a ledge upon which the plates bear near their peripheries. In conjunction with these-I employ a locking-ring provided with internal separated rabbets or grooves of such size as to permitithem to receive the lips on the interior of the ring'or annulus when the plates are in position. This is accomplished by placing the'internal locking-ring within the annulus in such manner as that the lips upon the interior of the latter coincide with the spacebetween the rabbetsin the lockingring. The latter is then pressed downwardly .upontheperiphe'ry of the plate or plates,

nulus, locking-ring, and plates. 1 have found that these blankets fray rapidly and the securing devices for that reason become defective. To remedy this, I provide each blanket with a binding, also preferably, but not necessarily, of fabric. The adjacent edges of two blankets, at both central perforation, and periphery, may then be attached either, by strings or by stitching or other suitable means andthe useful life of the whole prolonged.

In the drawings, Figure 1 is a face View of a press element embodying my invention. Fig. 2 is a similar view, the perforate plates and locking-ring being removed. Fig. 3 is an enlarged section on the line 3 3, Fig. 1. Fig. 4. is an enlarged detail perspective of a portion of the ringer annulus. Fig. 5is a similar view of a portion of the locking-ring, illustrating a modification; and Fig. 6 is a detail sectional view illustrating a further modification of the locking-ring and annulus.

Referring to the drawings, in which simi- These [are lar letters of reference denote corresponding about midway between said faces, as shown in Fig. 3.

a a designate separated lips preferably formed integral with the annulus and extending inwardly therefrom. These lips coact with the locking mechanism.

B designates the locking-ring. This also is formed of a suitable metal and is of such size as to fit snugly within the annulus A. This is provided in its exterior with a series of separated rabbets or grooves b b, the spaces between these being cut away at I). These cut-away portions coincide with the lips 02*. The upper surface 11 of the locking-ring may be beveled, as shown, and this beveled surface may be serrated or lined, as at 19 to facilitate the turning of the ring. If desired, the ring may be provided with a stud or boss 11 Fig. 5, for the same purpose.

0 designates the filter-plates. In the present instance these consist of the central imperforate corrugated plate 0 and the perforate plates C C on either side of said plate 0'. These are preferably of the same size and are provided with the central perforations 0, through which the oil is forced. The plates, as above indicated, rest near their peripheries upon the flange a of the annulus. The interior of the latter may, if desired, be cut away, as shown at 0, so as to make the seat for the plates 0 equal in height to the thickness of the plates.

Each of the outside plates C is provided upon its exterior with bosses c and the bosses upon each element coincide with those upon the next adjacent element. Each element therefore bears against the adjacent element not only at the annulus A, but also at the bosses 0 It should be understood that I do not limit myself either to the number of plates or to the particular description thereof above given. Both number and description may be varied to meet the requirements of use.

In operation the plates are placed upon the flange or ledge a and the lockingring B placed within the annulus so that the cut away portions 1) coincide with the lips or of theannulus. Thelocking-ringisthen pressed downwardly and partially revolved, so as to cause said lips a to enter the rabbets or grooves 19 of said ring. This operation is facilitated by the beveling of the ends of the lips w, as shown at a. If desired, the ends of the flange forming the rabbets or grooves ing up an element of this structure the plate or plates are placed upon the flange a, the

locking-ring B placed upon them and within the annulus, and the bolts or rivets passed through flange, plates, and ring and secured. This construction may be used either with or without the rabbets or grooves in the ring and the lips in the annulus.

Turning now to the blankets D, these consist of disks of fabric larger than the press element. They are provided with the central perforation d. Each blanket is preferably bound around its inner edge (not shown) and outer edge, as shown at cl. One blanket is placed on either side of the annulus and plates. The bound edges surrounding the perforation in one blanket are then stitched or otherwise secured to the corresponding edges of the blanket on the other side of the annulus and plates. The outer edges of the blankets extend beyond the annulus, and here each two blankets which are attached around the central perforation are secured together by stitching or other suitable means. The structure thus described constitutes a filter-press element. A series of these are mounted in juxtaposition upon the pressframe by means of the cars a a. The oil or other fluid is then introduced into the press and forced through under considerable pressure. During this operation the waxes and other solid matters are deposited upon the exterior of the blankets, the clarified oil passing through the blankets and perforate plates into the channels in the corrugated plate and running off through the outlet a of the annulus.

Afilter-press thus constructed will be found more efficient, as well as stronger and more durable, under the rough usage and high pressure required than presses heretofore employed.

Having now described my invention, what I claim is 1. In a filter adapted to separate material under pressure, the combination of a series of press elements arranged in series, each element comprising a ring or annulus, a filtering medium removably connected therewith and having a substantially central opening, and a detachable locking-ring for securing said filtering medium to said ring or annulus, substantially as set forth.

2. In a filter-press element of the character described, the combination of a ring or annulus having an interior flange, a series of filterplatcs removably secured to the same and supported thereby, (said series comprising a central vertically-corrugated plate and two adjacent perforate plates on both sides thereof) all of said plates having a central opening for the passage of the liquid under pressure, and two blankets secured together at said central opening and covering said plates and resting on the ring or annulus, substantially as described.

3. In a filter-press element of the character described, the combination of a ring or annulus provided with an interior flange, a filterplate supported on said'flange, a locking-ring.

for securing said plate in position, means for detachably securing said locking-ring to the ring or annulus, said plate having a central opening for the passage of the liquid under pressure, and two blankets secured together at said central opening and covering said plate and resting on the ring or annulus, substantially as described. 4

5. In a filter-press element of the character described, the combination of a ring or annulus provided with an interior flange, a series of filter-plates supported on said fiange,(said series comprising a central corrugated plate and two perforate plates on both sides thereof,) all of said plates having a central opening for the passage of the liquid under pressure, a locking-ring cooperating with the ring or annulus for securing said series of plates in position, and two blankets secured together nulus and a locking-ring coacting with said intern-a1 lips to secure. said filtering medium to said ring or annulus, substantially as described.

7. In a filter-press element, the combination with a ring or annulus having internal lips beveled at their ends, of a filtering medium and a locking-ring coacting with said internal lips to secure said filtering medium to said ring or annulus, substantially as described.

8. In a filter-press element, the combination with a ring or annulus having internal lips, of a filtering medium and a locking-ring, having rabbets or grooves coacting with said internal lips to secure said filtering medium to said ring or annulus, substantially as described.

9. In a filter-press element, the combination with a ring or annulus, of a filter plate or plates, a locking-ring for securing removably said plate or plates in position, and a disk of fabric, substantially as described.

10. In a filter-press element, the combination with a ring or annulus having. anoutlet for the filtered material, of a filter plate or plates having hollow bosses, a locking-ring ELI I-IENDRIOK.

Witnesses:

S. O. EDMONDS, JOHN R. TAYLOR. 

